# 50以内加减法口算 vs Speed math

The clearest difference is in-app purchases: 50以内加减法口算 at none against Speed math's 1. 50以内加减法口算 also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Speed math sells 1 one-off in-app purchase. 50以内加减法口算 asks for nothing beyond the download.

50以内加减法口算 ships an update every 22 months, Speed math every 11 months. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 50以内加减法口算 | Speed math |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | **Every 11 months** |
| Monetization | Free | — |
| Size | 27 MB | 16 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [华 周](https://appshunter.io/developer/569428357) | [向军 贾](https://appshunter.io/developer/788691093) |

## What reviewers say

### 50以内加减法口算

[App page](https://appshunter.io/ios/app/50/id1087409881)

This app helps children aged 3-7 develop essential mental math skills within 50. It offers engaging game-based learning for addition, subtraction, and mixed operations, with adjustable difficulty levels and helpful hints.

**Highlights:** Mental math practice within 50, Addition and subtraction exercises, Mixed operation calculations, Game-based learning, Adjustable difficulty levels, Real voice prompts, Practice and test modes

**Features:** macOS Compatibility

**In-app purchases:** none


### Speed math

[App page](https://appshunter.io/ios/app/speed-mathmental-arithmetic/id1092366930)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock function and off AD | $3.99 | one-time |


## Frequently asked questions

### Is 50以内加减法口算 free?

50以内加减法口算 is free to download, with no in-app purchases.

### Is Speed math free?

Speed math is free to download, with in-app purchases available.

### Do 50以内加减法口算 or Speed math have ads?

Speed math shows ads; 50以内加减法口算 does not.

### Which is updated more often, 50以内加减法口算 or Speed math?

50以内加减法口算 ships an update every 22 months, and Speed math every 11 months. Most recently, 50以内加减法口算 was updated on September 29, 2026 and Speed math on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*